H Series Bevel Helical Gearboxes and Helical Gearboxes:
Types
H1 Single Reduction
H2/H2SF Double Reduction,
H3/H3SF Triple Reduction,
H4/H4SF ,
B2/B2SF,
B3/B3SF,
B4/B4SF
• Unit Sizes: 80, 90, 100, 112, 125, 140, 160, 180, 200, 225, 250, 280, 315, 355, 400, 450, 500, 560, 630
• Transmission ratio: 1.2 - 637
• Input Power: 0.61 KW to 5,000 kW
• Torque: Up to 117,000 Nm
AGNEE H series helical parallel shaft and bevel helical right angle drive industrial gearboxes have been introduced to meet the requirements of today's demanding applications in the medium and heavy-duty sector of the power transmission market.
The modular design and construction of the Series H offers many engineering and performance benefits including a high degree of interchangeability of parts and sub assemblies. This in turn provides considerable economies of production while maintaining the highest standard of component integrity.
Apart from standard range, Gear Boxes are also tailor made to suit individual requirement or as per specifications provided. Please feel free to discuss your requirement and we shall be pleased to make suitable suggestions.
Product Specification:
Gear tooth geometry design combines maximum efficiency with high load carrying capacity and minimal noise generation. Serviceability of the product was key in the design of the Series H range allowing easy maintenance for long life and reliability, which are synonymous with our field reputation.
The Bevel Helical Gearbox Housing is usually made of Close Grain Cast Iron. Sometimes Housing is also offered in Structural Steel when the application demands. They are rugged, corrosion resistant and absorb shock and vibration. The Helical Pinion is made of EN 353 Case Hardening Steel, Helical Gears are made of SAE 8620 Case Hardening Steel. The teeth are generated on Gear Hobbing Machine. They are then Case carburized, Hardened and Tempered. Finally, they are surface ground to close tolerances. The teeth Flanks are ground on Teeth Profile Grinder. This leads to very good efficiency and a quiet working condition. The Output shafts are from alloy steel forging or bars. Low speed shafts can be solid or hollow type. Bearings are fitted on a accurately bored journal and taper roller Bearings are used.
Features & Benefits of Bevel Helical Gearboxes :
AGNEE Series H Bevel Helical Gearbox takes advantage of our many years of accumulated design expertise together with the use of high quality materials and components, and has the following features & benefits:
• Profile ground helical gears.
• High level of surface finish for quiet running.
• All Gears and Pinions case carburised, Hardened and Tempered
• Teeth Profile Ground
• Units can be offered in horizontal or vertical mounting positions
• All units are also available with hollow bore for output shaft mounting.
• Output bores can be connected by shrink disc.
2. AGNEE Series H
Helical and Bevel Helical Gear Boxes
AGNEE H series helical parallel shaft and bevel helical right angle drive industrial gearboxes have
been introduced to meet the requirements of today's demanding applications in the medium and
heavy- duty sector of the power transmission market.
AGNEE gear units are fully metric and are suitable for most applications horizontal drives and
vertical drives.
Based on a modular design and construction, the high degree of interchangeability of parts and
sub- assemblies among all variants effects considerable economies of production, whilst maintaining
the highest standard of component and unit elements. A wide choice of ratio is available based on
recommendations laid down in AGMA standards with additional half ratio steps.
Profile ground helical gears together with spiral bevel gears lapped in pairs, ensure high standards
of accuracy, surface finish and quiet running characteristics. Helical gears are fitted in parallel shaft
units whilst units with shaft at right angle incorporate spiral bevel and helical gears. High quality
alloy case hardening material provide long life wear resistance and fatigue strength.
The high power to weight ratio of all units combines with volume to enable installation in the most
difficult situations, Each of the two variants contains unique features suited to their own operating
conditions. Horizontal units feature optional right or left and shaft arrangements from the same
sub- assemblies and are available as foot mounted, shaft mounted or foot/shaft mounted types
2 of 80
3. AGNEE Series H
Helical and Bevel Helical Gear Boxes
CONTENTS
Sr. No.
1.
2.
3.
Particulars
Page No.
MARKETING DATA
a. Index
b. Design Feature
3
4
SELECTION- Procedure and Example
a. Horizontal
5
RATINGS - Mechanical & Thermal Ratings (Kw)
Type
Shaft
H1
H2
H3
H4
B2
B3
B4
4.
Reduction
Single
Double
Triple
Quadruple
Double
Tripe
Quadruple
Parallel
Parallel
Parallel
Parallel
Right Angle
Right Angle
Right Angle
8
11
13
15
17
19
21
DIMENSIONS – Principal, shafts & Keyways (mm)
A. Horizontal Units
Type
Shaft
Mounting
H1
H2
H2 SF
H3
H3SF
H4
H4SF
B2
B2 SF
B3
B3 SF
B4
B4 SF
5.
Reduction
Single
Double
Double
Tripe
Tripe
Quadruple
Quadruple
Double
Double
Tripe
Tripe
Quadruple
Quadruple
Parallel
Parallel
Parallel
Parallel
Parallel
Parallel
Parallel
Right Angle
Right Angle
Right Angle
Right Angle
Right Angle
Right Angle
Foot
Foot
Foot/ Shaft
Foot
Foot/ Shaft
Foot
Foot/ Shaft
Foot
Foot/ Shaft
Foot
Foot/ Shaft
Foot
Foot/ Shaft
Engineering Data
23
26
30
33
37
40
43
45
48
51
54
57
60
62
3 of 80
4. AGNEE Series H
Helical and Bevel Helical Gear Boxes
DESIGN FEATURES
GEARS : High quality alloy case hardening materials
provide long life wear resistance and fatigue strength.
Profile ground single helical gears and spiral bevel gears
lapped in pairs ensure high standards of accuracy,
surface finish and quiet running characteristics. Helical
gears are fitted in parallel shaft units whilst units with
shafts at right angles incorporate spiral bevel and helical
gears.
BEARINGS : Taper Roller bearings are used throughout.
GEAR CASES : Gear cases are of rigid cast iron
construction with modern styling. MS Fabricated gear
cases are available as optional. Inspection covers are
provided for viewing gear contacts. Oil level dipsticks,
ventilators and drain plugs are fitted. Cases are split in
horizontal plain for horizontal gearboxes and in the
vertical plain for vertical gearboxes.
Gearcase Finish : Internal and external semi-gloss blue
painted with linear epoxy primer. External surfaces are
finished with alkyde semi-gloss blue paint. These paints
are resistant to dilute acids and alkalis, oils and solvents,
0
sea water and temperatures upto 140 C.
External Dimensions : Centre distances are chosen
from ISO preferred number series. Shaft extensions and
hollow wheelshaft bores are to ISO metric standards.
Fastners are metric.
Lubrication : In horizontal units, lubrication in most
instances is by transfer of oil by gears dipping in the
sumps of gear unit bases. Where high pitch line speeds
could cause churning of the lubricant, case baffles are
fitted as indicated on rating tables. Forced lubrication is
necessary where shown and complete systems can be
supplied when required. In vertical units, lubrication in
most instances is provided by a pump driven from the
bottom of the high speed or second motion shaft. The low
speed gears dip in the oil bath. In some cases, it is
necessary to use a forced lubrication system with a
separate oil tank. These are marked in the ratings tables.
All units are provided with combined dipsticks and
ventilators and drain plugs.
COOLING : Depending on the application, standard gear
units are cooled by :
Normal heat dissipation by convection from external
surfaces.Fans fitted to high speed shafts.
Cooling water coil fitted in gear unit base.
Fan and cooling coil.Separate oil cooler incorporated in
forced lubrication systems.
SHAFT MOUNTED UNITS : Shaft mounted units are of two
designs, the first of which is mounted on the driven machine
shaft extension and connected to the foundation by torque
arm. Additionally foot/shaft design is available for mounting
on a base plate with motor and coupling, the complete
assembly being mounted on the driven machine shaft
extension connected to the foundation by a torque arm.
MOTORISED GEAR UNITS : Gear units of double and triple
reduction types are available as standard assemblies with
flanged motors directly mounted on gear case input shaft
housing by adaptors. Mo tor and gear unit shafts are
connected by flexible coupling.
HOLD BACKS : Hold backs can be fitted to all horizontal, two
and three stage gear units, where required to operate in nonreversing drives. They are located on horizontal pinion shaft
and have ad equate capacities to deal with full rated torque.
Lubrication is provided automatically from the oil in the gear
unit. Changing the direction of locking rotation is a simple
operation.
PRESERVATION/PROTECTION : AGNEE helical gear units
are despatched without oil. Prior to despatch they are test run
with a rust preventative oil giving adequate protection to
internal parts for a period of 6 months, covering normal
transport and covered storage.
NOTE : Where gear units are to operate in abnormal
condition or where they are to stand for long period without
running for e.g. in plant installation, AGNEE must be notified
so that suitable protective arrangements can be made.
As improvements in design are being made, this specification
is not to be regarded as binding in detail and drawings and
capacities are subject to alterations without notice. Certified
drawings would be sent on request.
4 of 80
5. AGNEE Series H
Helical and Bevel Helical Gear Boxes
SELECTION PROCEDURE
Gearbox Selection for Horizontal Units
Table 1: Mechanical Service Factors (Horizontal & Vertical)
Duration
of service
Hrs. Per
Day
1. Select Gearbox Type
1.1 Parallel Shafts (helical) or right angle drive
(bevel/helical), foot mount, shaft mount with or without
foot.
Prime Mover
1.2 Calculate gearbox ratio = Input Speed/ Output speed
ELECTRIC
MOTOR, Steam
Turbines
2. Select Gearbox Size from Mechanical Capacity
2.1 Determine type of load from table 3 on page 10
(uniform,
moderate shock or heavy shock).
Multi-Cylinder
Internal Combustion
Engine
Single Cylinder
Internal Combustion
Engine
2.2 Determine mechanical service factor from table 1.
2.3 Calculate the required mechanical power capacity (Pm )
(Pm ) = absorbed power (kW) x mechanical service
factor
2.4 Select gearbox size from rating tables.
Pm must be equal to or less than the mechanical rating
of the gearbox.
3. Thermal Rating Check
3.1 Thermal ratings are given for the following four cases :
Gearbox without additional cooling.
Gearbox fitted with fan.
Gearbox fitted with cooling water coil.
Gearbox fitted with fan and coil.
3.2 Determine the thermal service factor from table 2.
Pt must be equal to or less than the thermal capacity of
the gearbox
0.80
1.00
1.25
1.00
1.25
1.50
1.50
1.75
2.00
Under 3
3 to 10
Over 10
1.00
1.25
1.50
1.25
1.50
1.75
1.75
2.00
2.25
Under 3
3 to 10
Over 10
1.25
1.50
1.75
1.50
1.75
2.00
2.00
2.25
2.50
Table 2 : Thermal Service Factors (Horizontal & Vertical) for
ambient temperature and duration of operation.
Type Of
Cooling
Ambient
Temperature
o
C
100%
805
60%
40%
20%
Gear
10
1.12
1.34
1.57
1.79
2.05
Running Time in Hour
Boxes
20
1.00
1.20
1.40
1.60
1.80
without
30
0.88
1.06
1.23
1.41
1.58
additional
40
0.75
0.9
1.05
1.20
1.35
Cooling
50
0.63
0.76
0.88
1.01
1.13
3.3 Calculate the required thermal power capacity (Pt)
(Pt ) = absorbed power (kW) ÷ thermal service factor.
3.4 Specify the type of cooling required by referring to
thermal rating tables.
Under 3
3 to 10
Over 10
Load Classifications-Driven
Machine
Uniform Moderate
Heavy
Shock
Shock
10
1.15
1.38
1.61
1.84
2.07
Gear
20
1.00
1.20
1.40
1.60
1.80
Boxes
30
0.09
1.08
1.26
1.44
1.62
with Fan
40
0.80
1.96
1.12
1.29
1.44
50
0.70
0.84
0.98
1.12
1.26
.
Additional Catalogue Information
1. Gearbox overload capacity at start.
2.5 x mechanical rating, 5 times per day or,
2 x mechanical rating, 5 times per hour.
Gear
10
1.10
1.32
1.54
1.76
1.98
Boxes
20
1.00
1.20
1.40
1.60
1.80
2. Intermittent duty.
Higher power than catalogue mechanical ratings can be
transmitted on very intermittent operation within the finite
life of the gears. Consult us with specific application
details.
with
30
0.09
1.08
1.26
1.44
1.62
Cooling
40
0.85
1.02
1.19
1.36
1.53
Coil (1)
50
0.80
0.96
1.12
1.29
1.44
Gear
10
1.12
1.34
1.57
1.79
2.05
Boxes
20
1.00
1.20
1.40
1.60
1.80
with Fan
30
0.92
1.10
1.29
1.47
1.66
& Cooling
40
0.83
1.0
1.16
1.33
1.50
Coil (1)
50
0.78
0.94
1.09
1.25
1.40
(1) Based on Cooling -Water Temperature 20 C.
5 of 80
6. AGNEE Series H
Helical and Bevel Helical Gear Boxes
HOW TO ORDER, Selection Example
How to order-Information required when ordering standard gear units
Prime Mover
1. Type - electric motor or engine, for example 4
cylinder internal combustion engine
2. Power rating in kW
3. Output speed. If variable, indicate speed range and
frequency of variable.
4. Dimensions of prime mover.
3.Ratio
4.Shaft handling. Refer to dimension pages and quote
reference.
5.Direction of rotation (for units with right angle shafts refer to
handling diag rams on dimension pages). If holdback
arrangement is to be fitted, please indicate the direction of
rotation of low speed shaft looking towards it.
Driven Machine
1. Type, for example, kiln, conveyor, etc.
2. Power rating in kW
3. Speed
4. Service - hours per day, running time in any hour,
details of reversals if applicable, type of loading,
ambient temperature, etc.
Shaft Connections
1. Couplings Quote shaft diameters with tolerances or coupling
bores.
2. Details of overhung loads, including diameter and type of
sheave, sprocket or pinion and any thrust loads.
Gear Unit
1. Type, for example, H2.
2. Size, for example, 315.
Example 1
A foot mounted parallel shaft speed reducer is to be
directly coupled to a 750 kW, 1500 rpm motor. The
output shaft is to rotate at 365 rpm and is coupled to a
large industrial fan absorbs 725 kW on 24 hours/day
0
service. The maximum ambient temperature is 30 C.
Selection
1.
Gearbox Type
1.1
Parallel shaft type is specified - type H.
1.2
Ratio =1500÷365
=4.11, type H1 (single reduction)
2.
Mechanical Capacity
2.1
From table 3 on previous page the application is
moderate shock.
2.2
From table 1 on page 3 the service factor is 1.5.
2.3
The required mechanical capacity = 1.5 x 725 =
1088 kW
2.4
Under mechanical ratings a unit size 315,
nominal ratio 4.13, has a capacity of 1293 kW
3.
Thermal Rating Check
3.1
From table 2 on previous page the thermal
0
service factor for 30 C ambient temperature and
100% running time is 0.9 for a unit with fan
cooling (reference to the thermal ratings shows
that at least fan cooling is required.)
3.2
The required thermal capacity = 725 - 0.9 = 806.
3.3
Under thermal ratings, fan cooled, a size 315 has
a capacity of 918 kW at 1500 rpm, ratio 4.15
4.
Check that the exact ratio.
5.
Order a gearbox type H1 - 315 exact ratio 4.15
with cooling fans fitted.
Shaft mounted units for High Inertia Drive
When used on Traverse drives with inertia driven loads, e.g.
crane drives (slewing, long travel and cross travel) bogie drives
and selected high inertia load roller table drives, it is
recommended that shaft mounted units should be fitted with
shock absorbing Torque Arms. Consult us with specific
application details.
Example 2
A shaft mounted gear unit right angle shafts is required to drive
a belt conveyor running 24 hours/day at 80 rpm. The unit must
have feet for the attachment of a motor mounting baseplate.
The motor is 500 kW at 1500 rpm and the absorbed power at
the conveyor headshaft is 465 kW. The ambient temperature on
0
site is 20 C.
Selection
1.
Gearbox Type
1.1
Foot shaft mounted unit with right angle shafts.
1.2
Ratio = 1500÷80 = 18.8, type B2SF could be used
2.
Mechanical Capacity
2.1
From table 3 on page 10 the application is uniform load.
2.2
From table 1 on page 3 the service factor is 1.25
2.3
The required mechanical capacity = 1.25 x 465 = 581 kW
2.4
Under mechanical ratings a unit size B3SF - 400, nominal
ratio 18.9, has a capacity of 620 kW. The double
reduction type B2SF - 400 ratio 18.9 has insufficient
mechanical capacity.
3.
Thermal Rating Check
3.1
From table 2 on previous page the thermal service factor
0
for 20 C. ambient temperature and 100% running time is
1.0
3.2
The required thermal capacity = 465÷1.0 = 465 kW.
3.3
Under thermal ratings, fan cooled, a size 400 at 1500 rpm
has a capacity of 484kW
4.
Check that the exact ratio.
5.
Order a gearbox type B3SF - 400, exact ratio with cooling
fans fitted.
6 of 80
7. AGNEE Series H
Helical and Bevel Helical Gear Boxes
OVERHUNG LOADS / AXIAL THRUST LOADS - HORIZONTAL UNITS
Whenever a sprocket, gear, sheave or pulley is
mounted on the shaft, a calculation should be made
to determine the overhung load in kN on the shaft,
using the formula :
p
Where P
=
=
kW x 9545 x K ÷ N x R
equivalent overhung load in
kN,
power carried by the shaft,
rpm of the shaft
pitch radius of sprocket,
pinion,
sheave or pulley (mm).
Table 4 : Permissible Overhung Load on Low Speed Shaft
(kN) (Horizontal Units)
Direction Output
of
Speed
Load (rpm)
Types H2-H3-B2-B3
Unit Sizw
Overhung member
Sprocket for chain
Spur gear
V belt sheave
Flat belt pulley
Notes :
1.
Values are calculated for the most
unfavourable direction of rotation. Consult us
with specific application details.
2.
Overhung loaad values are for loads applied
midway along shaft extension.
3.
For overhung load and axial thrust values for
large sizes consult us.
100 100
172
40
48
57
68
87
118 126
190
125
48
55
62
85
103 132 150
228
52
68
78
97
130 162 190
280
52
68
90
126 148 182 228
320
52
68
90
126 148 182 230
320
315
3
78
31.5>
2
56
80
K Factor
1
1.25
1.5
3.0
47
200
1
42
35
42
47
56
78
100 109
172
200
40
48
62
85
87
118 126
190
125>
=
=
=
450
35
50
kW
N
R
200 225 250 280 315 355 400
315
41
48
62
85
99
120 150
215
315>
18
23
30
42
49
61
107
78
Table 5 : Permissible Overhung Load High Speed Shaft at
1500 rpm(kN) (Horizontal Units)
Type of
Unit
Unit Size
200
225
250
H2-H2SH2SF
8.45
10.5
13.0 19.5 26.5 32.2 38.7 45.8
280 315 355 400 450
H3-H3SH3SF
3.03
4.58
6.45
B2-B2SB2SF
12.0
15.6
19.6 25.4 30.6 36.0 41.3 49.8
B3-B3SB3SF
3.03
7.12
8.90 12.0 15.6 19.6 25.4 30.6
8.4 10.5 13.0 20.0 28.9
Table 6 : Permissible Axial Thrust on Low Speed Shaft (kN)
(Horizontal Units)
Output
Speed
rpm
Type H2-H3-B2-B3
400
450
315
12.0 12.5 13.4 11.8 18.3 30.3 28.8
53.4
200
13.4 14.2 15.2 13.3 20.8 34.3 32.6
60.5
125
17.1 17.3 18.0 18.4 25.3 40.0 40.9
70.8
80
18.2 20.5 21.8 23.8 35.6 63.6 55.4 80.85
50
19.4 25.8 25.3 32.1 43.5 66.3 68.5
94.3
31.5 and
below
19.4 25.8 25.3 34.3 55.6 66.3 88.6
94.3
7 of 80
200
225
250
280
315
355
8. AGNEE Series H
Helical and Bevel Helical Gear Boxes
LOAD CLASSIFICATION BY APPLICATION
8 of 80
33. AGNEE Series H
Helical and Bevel Helical Gear Boxes
Type H3-Foot Mounted Units
TRIPLE Reduction - Parallel Shafts - Principal Dimensions (mm)
DIMENSIONS
SHAFT ROTATION
33 of 80
37. AGNEE Series H
Helical and Bevel Helical Gear Boxes
Type H3SF-Foot/Shaft Mounted Units
Triple Reduction - Parallel Shafts - Principal Dimensions (mm)
DIMENSIONS
SHAFT HANDING / ROTATION
37 of 80
40. AGNEE Series H
Helical and Bevel Helical Gear Boxes
Type H4-Foot Mounted Units
Quadruple Reduction - Parallel Shafts - Principal Dimensions (mm)
DIMENSIONS
SHAFT HANDING / ROTATION
40 of 80
43. AGNEE Series H
Helical and Bevel Helical Gear Boxes
Type H4SF-Foot/Shaft Mounted Units
Quadruple Reduction - Parallel Shafts - Principal Dimensions (mm)
DIMENSIONS
SHAFT HANDING / ROTATION
43 of 80
44. AGNEE Series H
Helical and Bevel Helical Gear Boxes
Type H4SF-Foot/Shaft Mounted Units
Quadruple Reduction - Parallel Shafts - Principal Dimensions (mm)
DIMENSIONS
Unit
Size
A
A1
A2
B
D
140
140
240
320
434
160
160
272
372
481
180
180
305
305
529
Unit
Size
R
S
140
14
160
18
180
18
D1
E
F
G
H
J
L
M
N
P1
Q
160
89
174
135
190
224
490
120
580
165
495
-
180
109
194
155
225
260
540
135
640
185
540
-
200
120
214
173
250
290
600
147.5
705
200
600
175
T
U
U1
V
V1
V2
W
W1
X
Z
K1
K2
4x12
20
100
60
18
-
-
40
-
140
75
76
75
4x16
20
110
70
18
-
-
40
-
160
85
86
85
4x16
25
120
85
18
85
90
40
65
175
-
-
-
Type H4SF –Foot/ Shaft Mounted Units
Triple Reduction - Parallel Shafts - Principal Dimensions (mm)
DIMENSIONS
INPUT SHAFT
OUTPUT SHAFT
Input Shafts
Unit Size
Output Sleeve Bores
V
V4
W
W2
Y
Z
V1
V2
K1
K2
M
N
140
18,008
17,997
M6x16
40
34
5,988
5,958
14,5
14,4
-
-
76
75,030
75,011
80,1
79,9
20,026
19,974
160
18,008
17,997
M6x16
40
34
5,988
5,958
14,5
14,4
-
-
86
85,071
85,036
90,6
90,4
22,026
21,974
180
18,008
17,997
M6x16
40
34
5,988
5,958
14,5
14,4
85,035
85,00
90,047
90,012
-
-
-
-
44 of 80
45. AGNEE Series H
Helical and Bevel Helical Gear Boxes
Type B2 –Foot Mounted Units
Double Reduction – Right Angle Shafts - Principal Dimensions (mm)
DIMENSIONS
SHAFT HANDING/ ROTATION
Opposite Rotation Available
45 of 80
48. AGNEE Series H
Helical and Bevel Helical Gear Boxes
Type B2 SF –Foot /Shaft Mounted Units
Double Reduction – Right Angle Shafts - Principal Dimensions (mm)
DIMENSIONS
SHAFT HANDING/ ROTATION
Opposite Rotation Available
48 of 80